STMicroelectronics M95P08-IXMCT/E

Overview

M95P08-IXMCT/E from STMicroelectronics is an 8-Mbit serial SPI page EEPROM with dual/quad output capability, organized as 2048 × 512-byte pages and featuring two dedicated 512-byte identification pages. It operates from 1.6–3.6 V over –40 °C to +85 °C, supports up to 80 MHz clock frequency, delivers quad-output read speeds up to 320 Mbits/s, and provides 500 kcycles write endurance with 100-year data retention.

For engineers reviewing the M95P08-IXMCT/E datasheet, M95P08-IXMCT/E pinout, M95P08-IXMCT/E application, or M95P08-IXMCT/E equivalent, key selection considerations include SPI mode compatibility (CPOL/CPHA = 0/0 or 1/1), ECC-enabled memory reliability, programmable output drive strength, block-level write protection with top/bottom option, and Deep power-down current of 0.6 μA (typ).

Technical Context

The device implements a proprietary NVM architecture with integrated Program/Erase Controller (PEC) managing auto-erase-and-program cycles, enabling consistent 2 ms (typ) byte/page write times across temperature and lifetime. Its dual/quad read modes operate via dynamic pin remapping: D-DQ0, Q-DQ1, W-DQ2, and HOLD-DQ3 become outputs during fast read quad commands, delivering 4-bit-per-clock throughput.

Internal ECC provides transparent double-bit correction and triple-bit detection over 16-byte chunks, with status flags accessible in the safety register. The memory map supports hierarchical erasure-page (512 B), sector (4 KB), block (64 KB), or chip-with configurable protection bits and volatile/non-volatile register sets for configuration, status, and safety monitoring per ISO 26262 requirements.

Key Specifications

Pinout & Package

Available in UFDFPN8 (2 × 3 mm), SO8N (4.9 × 6.0 mm), and WLCSP8 (1.264 × 1.363 mm) packages - all ECOPACK2-compliant, halogen-free, and RoHS-conformant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial EEPROM applications.

Compared with AT25SF041-SSHD-B and MX25L8006EM1I-12G, M95P08-IXMCT/E uniquely combines true EEPROM behavior (byte/page alterability), quad-speed read, on-die ECC, and dual ID pages - making it the sole fit for safety-critical, high-write-cycle, and secure parameter storage applications.

Availability

M95P08-IXMCT/E is available at Aetrix Electronics and suitable for industrial PLC configuration storage, automotive body control modules, medical infusion pump parameter vaults, and smart energy meter firmware staging requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for M95P08-IXMCT/E includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and memory solutions for industrial, automotive, and consumer markets.

M95P08-IXMCT/E belongs to ST's ultra-low-power serial EEPROM product line, engineered specifically for applications demanding high write endurance, ECC-protected data integrity, and flexible dual/quad SPI interface in space-constrained, battery-sensitive, or safety-certified systems.

FAQ

Does M95P08-IXMCT/E support standard SPI mode 0 (CPOL=0, CPHA=0)?

Yes, M95P08-IXMCT/E fully supports both SPI mode 0 (CPOL=0, CPHA=0) and mode 3 (CPOL=1, CPHA=1). Input data is latched on the rising edge of SCK, and output data appears on the falling edge. The device ignores clock polarity transitions outside active instruction windows, ensuring robust communication with legacy MCUs lacking mode 3 support.

How is the Unique ID provisioned, and can it be read without special commands?

The UID is factory-programmed into the first identification page upon customer request and remains permanently readable via standard fast-read commands starting at address 0xFFE00. No special unlock sequence or OTP programming is required - the UID occupies bytes 0–15 of that page and persists through all erase/write operations unless the entire ID page is erased (a protected operation requiring explicit command and write-enable sequence).

What happens to the HOLD function during quad-output read operations?

During fast read quad output, the HOLD pin (HOLD-DQ3) is repurposed as DQ3 after the third address byte is received and no longer functions as a hold input. This dynamic pin remapping is automatic and transparent - the device disables hold capability mid-command to maximize quad-data throughput, reverting to HOLD functionality only after the command completes and S goes high.

Can the second identification page be permanently locked to read-only, and what triggers the lock?

Yes, the second 512-byte identification page can be permanently locked to read-only using the LD (Lock Down) bit in the configurable register. Once set, the LD bit becomes nonvolatile and irreversible - subsequent write attempts to that page return status indicating protection violation. Locking occurs after a valid write-enable sequence followed by the Write Config Register command with LD=1, and takes effect immediately upon command completion.